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Spark plug health


JamesJDMwagon
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Bit difficult to say if they are running too hot but I'd say it's certainly not over fuelling as they're not "sooty"

Don't put 5's in as they're colder running than the 6's , most run ngk heat 7's on modified scoobs and close the gaps up a bit if running more than a bar of boost .

If it's not broke .....upgrade it 😊

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4 minutes ago, savage bulldogs said:

Bit difficult to say if they are running too hot but I'd say it's certainly not over fuelling as they're not "sooty"

Don't put 5's in as they're colder running than the 6's , most run ngk heat 7's on modified scoobs and close the gaps up a bit if running more than a bar of boost .

If it's not broke .....upgrade it 😊

Thanks Savage, all 4 are identical white sort of coat which normally means they're getting too hot or not enough fuel I really need to know what plugs people run with a vf22. I think sevens would make the problem worse as they are hotter. Happy to give them a try though. Got a bit of hesitation what boost comes in hard at 4K. What gap would you recommend?  As I'm going to clean them up and slap them in until I can find the right heat range. 

Thanks for the reply guys 😊

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I think I gapped mine to 6.5 instead of 7 .

Changing the plugs for colder ones won't make the engine run any colder , if anything they'll probably make it run worse and possibly make them crack or fail .

If it's not broke .....upgrade it 😊

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Perhaps it's a little too advanced (timing) yeah think I'll stay with 6's for now. yeah I'm just gaping them down to .65 . I may give 7's a try see if that helps. 

Im trying too lose so of the hesitation when boost comes on, it revs out nicely thought plugs might be an issue they where gaped to .75 just now when I measured them really appreciate the help 😊

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No problem bud, classics are known to "blow" the spark out when running extra boost and sometimes a smaller gap can rectify this (if it's a minor misfire) .

If it's a v1/v2 a newage coil pack conversion is another option to increase spark strength [emoji6]

If it's not broke .....upgrade it 😊

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13 minutes ago, savage bulldogs said:

No problem bud, classics are known to "blow" the spark out when running extra boost and sometimes a smaller gap can rectify this (if it's a minor misfire) .

If it's a v1/v2 a newage coil pack conversion is another option to increase spark strength emoji6.png

If it's not broke .....upgrade it 😊

I don't have a misfire it just seems slow when boost comes in its very strange the turbo is an apexi unit based on a vf22 I'm guessing the car had a proper ecu before I got it them it was returned to standard. I just want to get it running right but I don't think that's going to happen without a proper ecu. 

When its at 11 psi it's really bad hesitation but at 12-13 it's a lot better but not quite right 

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